How to enable IDFA with OS13 in test environment?

During testing, IDFA for all iOS devices is reported as "idfa":"00000000-0000-0000-0000-000000000000"

I understand the publisher guidelines while subitting the app

https://support.appsflyer.com/hc/en-us/articles/207032086-Implementing-Apple-iOS-IDFA-guidelines


However apple has not provided any way out to have valid IDFA during testing that i know of.


How to enable IDFA in test environment with iOS13?